Sodium thiosulfate (Na2S2O3) is a colorless, odorless salt. It is primarily utilized as a reagent in volumetric analysis, particularly in redox titrations. The solution is commonly used for the determination of halogens and plays a significant role in various analytical applications. When handling this solution, avoid acidic or oxidative conditions as these can affect the stability of sodium thiosulfate. It is crucial to use protective equipment such as gloves and goggles during use. For storage, the solution must be kept in a dry place, away from direct light and moisture. Furthermore, its chemical and physical properties are compliant with standards set by the European Pharmacopoeia.